Daniel Kurka has uploaded a new change for review.
https://gwt-review.googlesource.com/3661
Change subject: Utility to store multiple HandlerRegistrations
......................................................................
Utility to store multiple HandlerRegistrations
fixes issue 8246
Change-Id: I75ccd120b78e1be47fa6a1e4f20c607c68203c31
---
A
user/src/com/google/web/bindery/event/shared/HandlerRegistrationCollection.java
1 file changed, 65 insertions(+), 0 deletions(-)
diff --git
a/user/src/com/google/web/bindery/event/shared/HandlerRegistrationCollection.java
b/user/src/com/google/web/bindery/event/shared/HandlerRegistrationCollection.java
new file mode 100644
index 0000000..7ad1a18
--- /dev/null
+++
b/user/src/com/google/web/bindery/event/shared/HandlerRegistrationCollection.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
not
+ * use this file except in compliance with the License. You may obtain a
copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
under
+ * the License.
+ */
+package com.google.web.bindery.event.shared;
+
+import java.util.LinkedList;
+
+/**
+ * HandlerCollection allows to group many {@link HandlerRegistration}s
together
+ * into one object, that will cancel all event registrations on each
individual
+ * {@link HandlerRegistration} once {@link
HandlerRegistrationCollection#removeHandler()}
+ * is called.
+ *
+ * A simple example:
+ * <code><pre>
+ * HandlerRegistration hr1 = ...
+ * HandlerRegistration hr2 = ...
+ * return HandlerRegistrationCollection.create(hr1, hr2);
+ * </pre></code>
+ */
+public class HandlerRegistrationCollection implements HandlerRegistration {
+
+ /**
+ * Create and return a {@link HandlerRegistrationCollection} with the
given
+ * {@link HandlerRegistration}s
+ * @param handlers the {@link HandlerRegistration}s to add to the
collection
+ * @return the {@link HandlerRegistrationCollection}
+ */
+ public static HandlerRegistrationCollection
create(HandlerRegistration... handlers) {
+ HandlerRegistrationCollection collection = new
HandlerRegistrationCollection();
+ for (HandlerRegistration hr : handlers) {
+ collection.addHandlerRegistration(hr);
+ }
+ return collection;
+ }
+
+ private LinkedList<HandlerRegistration> handlers = new
LinkedList<HandlerRegistration>();
+
+ /**
+ * Add a {@link HandlerRegistration} to the collection
+ * @param hr the {@link HandlerRegistration} to add
+ */
+ public void addHandlerRegistration(HandlerRegistration hr) {
+ handlers.add(hr);
+ }
+
+ @Override
+ public void removeHandler() {
+ for (HandlerRegistration hr : handlers) {
+ hr.removeHandler();
+ }
+ }
+}
--
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I75ccd120b78e1be47fa6a1e4f20c607c68203c31
Gerrit-PatchSet: 1
Gerrit-Project: gwt
Gerrit-Branch: master
Gerrit-Owner: Daniel Kurka <[email protected]>
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